Dragon Ball Super

"Future" Trunks Saga

In the anime, Yajirobe was spotted by Goku in an underground base under West City and it caught them both by surprise. When Future Trunks questioned Yajirobe's existence, Yajirobe explained that Future Korin provided him with the final Senzu Bean to stay alive. After he explained this, Trunks assumed that after that event, Yajirobe gained the initiative to fight but a Resistance officer stated that Yajirobe only showed up when there was food.

Future Yajirobe giving energy to Future Trunks

After a short fierce battle between, the two duos of Goku Black and Future Zamasu, and Goku and Future Trunks, the Saiyans are easily overwhelmed; especially after a Black Kamehameha is launched by Black, directly beelining onto both of them. When Goku and Trunks are lying down helpless, Black and Zamasu together start preparing a huge energy cannon to exterminate them once and for all. However, Vegeta somehow manages to gather his last pinch of energy and siphons a Final Flash onto them, thereby destroying the energy ball. While this happens, Yajirobe quickly grabs Goku and Trunks, escorting them to safety. On his way back Yajirobe explains his stance to Goku, by saying that he did not have enough time to save Vegeta (though Future Mai and other members of the Resistance successfully rescue Vegeta as well).

Second future timeline

While Future Yajirobe died during Infinite Zamasu's final attack to wipe everyone out and his soul was erased when Future Zeno erased the future timeline, he still exists in the second future timeline created by Whis' alterations.

Trivia

When he is shown to be struck down by Future Android 18, Yajirobe's katana appears to be broken. The reason for this is unknown, but it has quite a resemblance as when Android 18 broke Future Trunks' sword (Future Android 18 may have done the same to Yajirobe's sword if he had attacked her with it).

He is one of the only characters from DBZ of the future timeline thought to have died in the Android conflict but is actually shown alive and well during Goku Black's rampage, due to him being fed by a Senzu bean upon mortally wounded, he stated, along with Future Turtle.